Solenopora
| Solenopora |
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|---|---|
| 250px | |
| Fossils of Solenopora species | |
Scientific classification  |
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| Phylum: | Rhodophyta |
| Class: | Florideophyceae |
| Stem group: | Corallinales |
| Family: | Solenoporaceae Pia, 1927 |
| Genus: | Solenopora |
| Species | |
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The extinct Solenoporaceae have traditionally been interpreted as a group of red algae ancestral to the Corallinales.[3]
The genus from which they take their name, Solenopora, originates in the Ordovician.[4] Unlike the Corallinaceae, this family has large vegetative cells and an undifferentiated thallus.[4] Additionally there are external, non-calcified sporangia.[5]
The differences in structure suggest that the holotype is not an alga at all, but rather is a chaetetid sponge. Post-Palaeozoic specimens therefore require re-classification.[6] However, some algal taxa are still classified within the genus.[7]
Some specimens of algal Solenopora retain an original pink colouration, which is banded with growth stages of the fossil; this is produced by boron-containing hydrocarbons.[7]
The solenoporaceae mineralized with calcite.[8]
Other genera within the Solenoporaceae
Although the following other genera have been included in this family, their status is uncertain due to the loose definition of the family.[2][2] [6]
- Dendronella Moussavian and Senowbari-Daryan 1988
- Elianella
- Marinella Pfender 1939
- Metasolenopora Pia 1930
- Parachaetetes Deninger 1906
- Pycnoporidium Yabe and Toyama 1928
- Solenoporella Rothpletz
- Tauristorea Senowbari-Daryan and Link 2005
See also
- Coralline algae#Evolution
- Other stem-group corallines:
- Arenigiphyllum (Ordovician)
- Petrophyton (Ordovician : Caradoc)
- Graticula (Silurian : Wenlock)
- Halysis (Ordovician)
- Archaeolithophyllum (Pennsylvanian)
- ?Maimonachaetetes (Mississippian)
- ?Palaeoaplysina (Pennsylvanian – Permian; possibly an animal)
- ? Solenoporaceae (Ordovician)
References
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- ↑ 2.0 2.1 2.2 Paleobiology Database
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